Wireless Mouse: Advanced 2.4GHz wireless transmission provide stable and reliable connection. Working distance up to 10 meters. Silent & Durable Click: Special soundless design for the right and left buttons, keep you focused and never disturb others. 5 million times keystroke test, durable to use. Plug and Play: No need install extra software, simply plug and play. Colorful design is suitable for modern young people and children.(Note:The USB receiver is hidden in the battery compartment, you need take it out and plug into your PC USB slot). Low Power Consumption: To save power it will automatically be in sleeping mode after 10 minutes inactivity , you can click any button to wake it up. Only 1 piece AA battery is required for power suppy (not included in the package). Accurate Tracking: High performance optical sensor ensures excellent precision and control.